Question

One solution of x2 - 64 = 0 is 8. What is the

Answer 1

Answer:

x=32

Step-by-step explanation:

When you set up the problem it would be:

x(2)-64=0.

(Add 64 to the other side as the inverse)

x(2)=64

(Divide by 2 to have the isolated variable.)

x=32

Answer 2

Answer:

Your other solution is -8

Step-by-step explanation:

Ignore the 8 for solving and solve it yourself

so how to solve:

x²-64 = 0 <- Rewrite

(x+8)(x-8) = 0 <-Factor (this is a difference of two perfect squares)

x+8 = 0 and x-8=0 <- Get the equations alone and solve

 -8    -8         +8  +8

   x = -8  and   x=8